402867306 has 12 divisors (see below), whose sum is σ = 872879202. Its totient is φ = 134289096.

The previous prime is 402867259. The next prime is 402867371. The reversal of 402867306 is 603768204.

It can be written as a sum of positive squares in only one way, i.e., 267028281 + 135839025 = 16341^2 + 11655^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11190741 + ... + 11190776.

Almost surely, 2^402867306 is an apocalyptic number.

402867306 is an abundant number, since it is smaller than the sum of its proper divisors (470011896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402867306 is a wasteful number, since it uses less digits than its factorization.

402867306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22381525 (or 22381522 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 402867306 is about 20071.5546483076. The cubic root of 402867306 is about 738.5626506630.

The spelling of 402867306 in words is "four hundred two million, eight hundred sixty-seven thousand, three hundred six".